From Kickstarter:
ANNOUNCEMENT - Bank error in your favor! Time to celebrate! We messed up on Sparks of Life when creating the Kickstarter reward tiers.
Here are the actual additional Sparks of Life (note: 1 is included with the game, not mentioned in this list) that are awarded in each tier, each with a retail value of $30:
$75 : +1 Spark of Life (total of 1 extra)
$150 : +1 extra Sparks of Life (total of 2 extra)
$350 : +2 extra Sparks of Life (total of 4 extra)
$750 : +3 extra Sparks of Life (total of 7 extra)
$1,500 : +3 extra Sparks of Life (total of 10 extra)
$2,500 : +5 extra Sparks of Life (total of 15 extra)
$5,000 : +5 extra Sparks of Life (total of 20 extra)
Note: This overwrites any mentioned of Sparks of Life in the reward tiers. You can also see these changes reflected in the reward tier chart images below.
So as a baron ($250 tier) you would have the default spark everyone gets, plus 2 extra, for a total of 3 sparks, along with the 3 souls everyone gets. The pledge store baron was changed to get more sparks of life but they got less of some other KS tier goodies I think.